Greenhouse gas (GHG) emission from vegetable land is of great concern recently because agriculture land is one of major sources contributing to global GHG emission.In this study experiments of Lactuca sativa L.land applied with different animal manure composts were carried out in a greenhouse located in Beijing in order to in-situ monitor emission ofGHG (CH4 and N2O) and ammonia, as well as analyze factors affecting GHG and ammonia emission.Results showed that emission factors (EFs) of CH4 from Treatment NRM (application with swine manure compost without red mud), RM (application with swine manure compost with red mud) and CF (application with commercial fertiliTer) were 0.2%, 0.027% and 0.04%, respectively, and EFs of N2O from these three treatments were 0.18%, 0.63% and 0.74%, respectively, and EFs of ammonia were 2.00%, 3.98%, 2.53%, respectively.CH4 emission flux was significantly affected by soil temperature and humidity, and N2O emission flux was related to soil temperature, surface temperature and humidity.The emission fluxes of CH4, N2O and NH3 were significantly affected by soil moisture, but there was little relation of emission of CH4, N2O and NH-3 and ambient temperature in the greenhouse.
animal manure compost Lactuca sativa L. greenhousegas ammonia emission factor
Zhen Ge Hefeng Wan Jia Zhong Chenyang Zhao Yuansong Wei Jiaxi Zheng Yulong Wu Shenghui Han Bo-fu Zheng
Research Center for Eco-Environment Sciences,Chinese Academy of Sciences,Beijing 100085,China;Beijin Research Center for Eco-Environment Sciences,Chinese Academy of Sciences,Beijing 100085,China;Nancha Research Center for Eco-Environment Sciences,Chinese Academy of Sciences,Beijing 100085,China; Research Center for Eco-Environment Sciences,Chinese Academy of Sciences,Beijing 100085,China;Capita Beijing University of Civil Engineering and Architecture,Beijing 100044,China Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China